GRUB2 is an ideal payload for coreboot. It's modular, extensible, supports booting off filesystems, and it has a scriptable shell. Our goal is to replace the common coreboot payload FILO with a coreboot-capable version of GRUB2.

This work was subsequently rejected by the GRUB project, and was eventually re-implemented by Robert Millan, one of the GRUB project members. The re-implementation lacks a couple of fundamental features. From this new base, more work was done.

Status

As of the time of this writing, the official GRUB2 can not be loaded in coreboot v2 without a small patch. It works fine with coreboot v3.

A significant amount of work has been put into GRUB2 in our MonotoneRepository, which also provides snapshots.